Blindstitching attachment for sewing-machines.



L. D. COREY.

BLINDSTITCHING ATTACHMENT FOR SEWING MACHINES.

APPLICATION FILED ocT. 27. 1913.

5/ VIM/41x42@ UNITED STATES AEN@ FFQF.

LYLE D. COREY, 0F MINNEAPOLIS, MINNESOTA.

BLINDSTITCI-IING ATTACHMENT FOR SEWING-MACHINES.

Application led October 27, 1913.

To all whom t may concern Be it known that I, LYLE D. Corner, citizen of the United States, resident of Minneapolis, county of Hennepin, State of Minnesota, have invented certain new and useful Improvements in Blindstitching Attachments for Sewing-lvlachines, of which the following is a specification.

My invention relates to an attachment for sewing machines and the object of the invention is to provide a means for sewing a blind stitch.

The invention consists generally in various constructions and combinations, all as hereinafter described and particularly pointed out in the claims.

In the accompanying drawings forming 'part of this specification, Figure 1 is a plan view of the attachment at work, Fig. 2 is a side elevation of the same, Fig. 3 is a sec tional view through the attachment and table, Fig. 4 isa detail view, partially in section, showing the manner of mounting the device on a table.

In the drawing, 2 represents a bed plate of an ordinary sewing machine adapted for y heavy or light sewing. 3 is an opening in the bed plate having grooves to receive the bed slide 4 of ordinary construction. Mounted on this slide is a base plate 4 and slidably secured to the base plate is a guide plate 5 having a slot 6 therein through which a screw passes for securing said plates4f and 5 to the slide 4, allowing the adjustment of the plates 4l and 5 back and forth upon the slide 4. The plate 5 has a' depending flange 8 which serves as a guide for the goods to be sewed, as shown plainly in Fig. 3. A plate 9 is mounted on .the plate 5 and is provided with a depending flange 10 which also serves as a guide, as will hereinafter appear. The plate 9 is provided with a slot 10 and is adjustable on the plate 5 by means of a screw 11 engaging a thread- -ed'opening in the flange 12 on said plate 9...

A stud 13 and a Screw 14 pass through the slot 10 and are mounted in the plate 5 and the stud 13 is provided with a compression spring 15 and a thumb nut 16 bymeans of whichthe plate 9 can be held down toward the plate 5 with a yielding pressure, and is capable of movement upwardly against the tension of the spring 15. The plate 9 may 'slide 'vertically on the screw 14, and the screw 11, as indicated in Fig. 3, is loosely Specification of Letters Patent.

Patented nec. a, i915.

Serial No. 797,627.

8. lVhen the screws 17 are turned in one direction, the plate 9 will be`raised against the tension of the spring 15, and when the screws are turned in the opposite direction, the tension of said spring will force the plate 9 downwardly upon the goods. This plate 18 has a longitudinal slot 18 therein to receive the stud 13 and the clamping screw 14, and when the screw 14 is loosened the plate 18 can be moved lengthwise on the plate 5. The end of the plate 18 overhangs the edge of the goods and prevents it from buckling or curling up between the guides Sand 10. A notch 19 is preferably cut in the edge of the guide plate 5 to allow for the movement of the needle 20 close to the edge of the fold in the goods in the blind stitching operation.

21 is an arm hinged at 21 to the extension of the base plate 4 and provided with a wheel .22 that is horizontally mounted to bear on the inside of the fold of the goods and press it against the guide 10, thereby holding the fold in its proper position for stitching. This wheel is slidable in a slot 23 in the arm 21 and is yieldingly held to the work by a spring 24. To allow for adjustment of the wheel 22 toward or from the plate 5 I prefer to provide a slot 25 in the base plate l and a screw 26 for clamping said plate to the table 2.

In the operation of the device, the material is'placed on the table with the edge of the cloth against the guide 8. The fabric which the operator desires to blind stitch to the goods beneath is folded with the fold placed against they guide l0, the plate 5 having been suitably adjusted, according to the distance of the blind stitch from the edge of against the guide and insure a uniform blind stitch equi-distant at all points from the edge of the garment.

'ln various ways the details of construction herein shown and described may be modified and still be within the scope of my invention.

l claim as my invention:

lw rlfhe combination, with a bed plate, of a base plate mounted thereon, guide plates mounted one above another on said base plate and having depending guiding anges, one of said flanges forming a seat for the edge of the fabric, the other flange a guide for the fold of the fabric, an adjusting screw for moving one of saidv plates vertical-ly with respect to the other, and a spring yieldingly resisting such vertical movement.

2. rll`he combination, with a bed plate, of a base plate mounted thereon, guide plates slidaloly `mounted on said base plate and having guiding ianges against which the edge of the fabric land the fold of the fabric to be stitched are placed, a yieldingly mounted Wheel arranged within the fold of the fabric and operating to hold it in contact with its guiding flange, the adjustment of one of said guide plates increasing or decreasing the pressure of its flange upon said fold,` and a needle operating between said flange and said Wheel.

3. 'lhe combination, with a bed plate, of a guide plate mounted thereon and provided with a depending guidingflange, a second message mounted on said first named and also having a depending flange and a sliding adjustment on said first named plate, the flanged end of said second guide plate also having a vertical movement, a spring for holding said guide plates together with a yielding pressure, and adjusting screws mounted in said second guide plate and raising said second guide plate against the tension of said spring.

4. rllhe combination, with a bed plate, of guide plates mounted one upon another thereon and having flanges for the edge and fold of the fabric, means for holding said guide plates together with a yielding pressure, and means for adjusting one of said plates vertically against the tension of said yielding means.

5. The combination, with a bed plate, of guide plates mounted one upon another thereon and having depending flanges for guide plate guide plate the edge and fold of the fabric, means for holding said guide plates together with a yielding pressure, and means for adjusting one of said guide plates lengthwise upon the other plate to increase or decrease the distance between the flanges of said plates.

ln witness whereof, l have hereto set my hand this 24th day of October, 1913.

l LYLE D. CUREY.

lWitnesses:

` EDWARD A. PAUL,

C. H. Rnnross.

engaging said first guide plate for 

